Force feed lubricator



Aug. 30, 1932. w E. SNYDER FORCE FEED LUBRICATOR Filed March 23, 1931 Ii/44%! W Pwwwvww w/ \km 1. 1

m m m m 5 B INVENTOR Patented A ug. so, 1932 w EARL SNYDER,oroInoINNA'rI, 01110, ASSIGNOR TO THE EDNA BRASS MANUFAC- TUBINGCOMPANY, or CINCINNATI, 01110, A CORPORATION or onro FORCE LUBRICATORApplication med March 23, 1931. Serial No. 524,523.

. Thisinvention relates to improvementsin force feedlubricators powerdriven and particularly applicable for locomotive engine service" for acentralized distribution lubricating system, automatically delivering under pressure metered charges of oil in the correct amount to variousand-numerous bearings while the locomotive or machinery is running,eliminating hand lubrication and service and assures perfect lubricationfor i all points.

The improvement primarily isdirected to the forcer or pumping unitsofthe lubricator of the ype as shown in a pending application to Elmer 0.Corey, filed Aug. 31, 1928,

Serial No. 303,204. The lubricator having a forcer or 1purnping unitforeach outlet or feed there rom. 1 1

1 An object of the invention is to improve the-structure of the pumpingunit to increase {1 its durabilityand efficiency and to render itreadily removable from the reservoir of the lubricator to which it isattached, for

making repairs orregrinding the valve parts,

as a reciprocating plunger and valve, confined within a cylinder" and tobe removed from an exterior of the lubricatorby detaching the cylinderand! without disturbing or interfering with the driving or actuatingparts housed and supported within the reservoir of'theflubricator.

Other objects and. features relate to details of construction all ofwhich will be more fully set forth in the following description ofltheaccompanying drawing, formlng' a partof this specification, in which aFigure 1 is a central vertical sectionthrough the lubricator reservoirand one of the forcer or pumping units containing my improvements.

Figure 2 is an enlarged section through a 1 pumping unit, taken on line2*2, Figure 1,

showing the plunger at the end of its down stroke.

I Figure 3 is asection on line 3-3, Figure 2.

Referring to the drawing, 1 indicates a lubricator reservoir of adetermined capacity for thenumber of feed outlets or pumping unitsprovided. The bodyis approximately of rectangular form in horizontalcross section and interiorlydivided by a horizontal septum or web 2,providing a fill chamber 3 immediately above the reservoir portion 4;,communicating with the reservoir through one or more openings 5 in theweb 2 covered by a screen or strainer 6. Alid or cover 7 provides aclosure for the fill chamber hingedlyconnected to the rear wall of thebody or reservoir and clamped in its closed position by clamppins 8,hingedly engaged, each between a pair of lugs extending from the forwardside or wallof the reservoir and engaged between lugs 10, extending fromthe forward side of the cover and locked by a lock nut 11,'screwthreaded upon the clamp pin 8;

An eccentric shaft 12 extends longitudinally through the interior of thereservoir and journalled in bearings carried by the res ervoir casingwith one end of the shaft, exteriorly of the reservoir, connected totransmission mechanism, not shown, for intermittently rotating theshaft. A second shaft or rod 13 is supported within the reservoir andextends parallel and in rear of the eccentric shaft. This rod pivotallysupports a yoke lever or pitman 14, one for each forcer or pumping unitof the lubricator and has its forward end bifurcated to yoke or straddlethe eccentric shaft 12 so as to be actuated thereby with each rotationof the shaft. One limb or'arm 15 of the pitman extends forwardly beyondthe eccentric shaft and has a ball end engaging upon the upper end of aplunger valve 16 of the pumping unit so that the valve is positivelydepressed with each downward swing or stroke of the pitman.

The pumping unit comprises a cylinder 17 having a gland or flange 18extending from its periphery forsecuring the cylinder to the base of thereservoir with an upper portion of the cylinder extended into thereservoir,

7 through a bore in the base of the reservoir.

The upper portion of the cylinder within the reservoir 1s provided witha plurality of openings 19 therethrough for communication with thereservoir, and the openings protected by a screen band'20 recessedwithin the periphery of the cylinder. The screen pro- A tubular plunger22 has its lower end slid- 3 ably, concentrical.y engaged into thebushing 21 and its upper end provided with a head 28 guidingly slidablewithin the upper end of the cylinder and socketed into the lower end ofayoke 24*, also slidably guided withinthe upper open end of the cylinderand provides reservoir and screwthr'eaded into the web 2.

a movable guidefor the head of the plunger valve 16. The yoke 4straddles the ball end of the pit-man arm audits upper end-has a stem 25connected therewith and vertically siidably engagedinto a bore of aguide stud 26 vertically within the fill chamber of the The guide studis provided with a set screw 27 forming ,an-adjustable stop forthe stem25 of the yoke tolimit; and regulate theupper stroke of the tubularplunger-22. l

The upper end ofthe tubular plunger22 is counterbored to provide ashoulder and-seat for the plunger valve 16 to close the bore of theplunger 22 in a down or feeding stroke of the parts for forciblydischarging theoil from the cylinder, and a second shoulder'for seatingone end of a spring 28 interposed between the head of'the plunger andhead of the valve 16. The plunger 22 immediately 5 above the valve seatis laterally bored to'provide openings 29, as inlets from the cylinderchamber 30 into the bore of the plunger 22 when the valve 16 isunseated.

A spring 31 for automatically retracting plunger 22, with the retreatstroke of the valve 16 is interposed within the cylinder chamber 30,between the head of the plunger and flange of the bushing 21. i

The lower end of 'hecylinder 17 is sealed by a hollow screw cap 32,housing a ball .check valve 33, screwthreaded into the lower end of thebushing 21, with its valve closing to the bore of the plunger. The lowerend conduit extension of the cylinder is also provided with an L towhich the pipe connections forconducting the lubricant to the bearing,are made. The connections preferably comprise a union coupling 35, asecond check valve 36 and a-second union coupling 37 to which the pipeline is secured.

With each up stroke of the pitman 14, the valve 16 and plunger 22 withthe yoke 24: coordinately retreat automatically under the tension of therespective springs 28, 31, the

valve in each instance moving a full stroke corresponding to the upperstroke of the pitman, while the plunger moves up only for the regulatedamount and variable to the movement of the valve, allowing the valve tounseat for the admission of oil into the bore of the plunger andcylinder spacebelow the plunger. .The cylind'er chamber 30 as well asthe ports 290i the plungerare always open to the supply of the reservoirso that oil is taken into the bore :of the plunger as" 'soon as thevalve is un'seated. "As soon as the pitman commences onits down strokeit will move'the'valve down, closing the bore of the.

plunger, and carry the plunger therewith for oil discharge from thecylinder and through the check valves and distributing pipe. i

The plunger movement is regulatedby adjusting the set screw 27, whichgoverns plunger displacement and thereby various meteredouantities ofoil can be discharged to'meet the different requirements. The adjustmentand regulation can be made at will and while the ,lubricator is inoperation bymerely resetting the-set screw 27 The setscrew. can beadjusted to an eX- treme position to allow an excess of plunger movementavoiding valve unseating so that no lubricant will be, admitted into thebore of the plungerand-thus serve as a means for cutting off thes'upplyto a given line without disturbing the operation of the otherpumping unit'soof alubricator. 1 f The pumping unit can be readilyremoved from the reservoinfor repairs and without removing ordisturbingthe yoke,,by unbolt ing the cylinder, the cylinder, plunger. and

valve can be slipped out from the reservoir casing. .a

Having described myinvention, I claim: In a. lubricator, a reservoirbody, a pump unit fixed to the base ofthe reservoir body providing apressure feed outlet for the lubricator and comprising a cylinderhavingan upper endengagedthrough the base of and bore is closedat theseat, a spring for automatically retreating said plunger, a plungervalve guidingly sustained in the upper endof the bore of the plungercooperating with said seat to close the plunger borein a power litstroke of the valve, a spring for automatically retracting said valve,power driven means for positively depressing said valve and in turnsaidplunger upon the seating of the valve andmovable means guidinglysustained in said cylinder and providing an adjustable abutment for theplunger and relative variable retreat of said plunger and valve and toguidingly sustain the valve;

In Witness whereof, I hereunto subscribe my name.

W EARL SNYDER

